Implement $Secure- cookie prefix

content/browser/frame_host/render_frame_message_filter.cc

Index: content/browser/frame_host/render_frame_message_filter.cc
diff --git a/content/browser/frame_host/render_frame_message_filter.cc b/content/browser/frame_host/render_frame_message_filter.cc
index d7e9d9e605ba6a43af0ec920b37f004bdfc1c8a7..8b6c077a84f4ebb72a94beea985c9e52dffb782e 100644
--- a/content/browser/frame_host/render_frame_message_filter.cc
+++ b/content/browser/frame_host/render_frame_message_filter.cc
@@ -4,6 +4,7 @@
 
 #include "content/browser/frame_host/render_frame_message_filter.h"
 
+#include "base/command_line.h"
 #include "content/browser/bad_message.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
@@ -14,6 +15,7 @@
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/content_constants.h"
+#include "content/public/common/content_switches.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "net/cookies/cookie_store.h"
 #include "net/url_request/url_request_context.h"
@@ -342,6 +344,10 @@ void RenderFrameMessageFilter::OnSetCookie(int render_frame_id,
           url, first_party_for_cookies, cookie, resource_context_,
           render_process_id_, render_frame_id, &options)) {
     net::URLRequestContext* context = GetRequestContextForURL(url);
+    if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+            switches::kEnableExperimentalWebPlatformFeatures)) {
+      options.set_enforce_prefixes();
+    }
     // Pass a null callback since we don't care about when the 'set' completes.
     context->cookie_store()->SetCookieWithOptionsAsync(
         url, cookie, options, net::CookieStore::SetCookiesCallback());